Sitemap - 2025 - Cello's Blog

Building a DIY Advent Calendar powered by Home Assistant

Building a Second Brain in Obsidian

Pen-testing without Prison

You are Never Safe in Cyber Security

Learning Cyber Security

Lessons Learned: Building a Cross-Platform App with AI

Hack The Box: Nibbles

My guests' favorite automation is dumb as hell

Smart HDMI Switching with Home Assistant

I have nothing to hide - A dangerous mindset in the age of OSINT

Key Safe Overkill: Better Safe than Sorry

Reclaiming Privacy: How I Got Rid of Google Photos

Spotify made my Daughter cry. Home Assistant made her smile again.

Home Assistant saves my Daughter from Nightmares

Lost in Translation

Fixing Connection Issues by Flashing ESPHome on Shellys OTA

My Journey to Pain-Free Typing

How I explained IoC and DI to our Senior Software Engineer

Embarrassment-Driven-Testing

How to implement Retries without Cluttering your Code

Imperative vs. Declarative Models. Explained with Beer

Beyond the Dogma: An unpopular opinion on Clean Code

How and Where to handle Exceptions while Maintaining a Great API

How Home Assistant saves me 250€ every year

Fake it till you Make it: Shipping your Ideas

Benefits of Smart Laundry

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